(L.) R.Br. ex Ait.f.
Baptisia tinctoria (common names include yellow false indigo, wild indigo, wild-indigo and horseflyweed) is a herbaceous perennial plant in the family Fabaceae. It is native to eastern North America.
Baptisia tinctoria is found throughout the eastern United States, west to Minnesota, and south to Florida. As it is rare in some parts of its range, it is protected by some state authorities: in Kentucky it is threatened; in Maine it is considered endangered. It prefers dry meadow and open woodland environments.
The multiple bushy stems of Baptisia tinctoria reach 2 to 3 feet tall. The leaves are silver-green; each is divided into three leaflets about ½ inch long. The flowers are yellow and grow in spikes 1½ to 3 inches long.
- C. E. Bessey (1886). "The tumble-weed of the west". Botanical Gazette. University of Chicago Press. 11 (2): 41. doi:10.1086/325904.
- "BSBI List 2007" (xls). Botanical Society of Britain and Ireland. Archived from the original on 2015-01-25. Retrieved 2014-10-17.
- "Baptisia tinctoria". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 9 January 2016.
- Canby, William. "Notes on Baptisia." Botanical Gazette 4 (1879): 129-132.
- USDA, NRCS. 2007. The PLANTS Database (http://plants.usda.gov, 31 May 2007). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
- "Baptisia tinctoria". Missouri Botanical Garden. http://www.mobot.org/gardeninghelp/plantfinder/Plant.asp?Code=J500 (accessed May 24, 2007).
- Crockett, James U.; Allen, Oliver (1977). "Wildflower Gardening" (1 ed.). Alexandria, Virginia: Time-Life Books.
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